[VHFcontesting] Re: RFI/Power line noise problem

R J Carpenter rcarpen at erols.com
Wed Sep 18 09:34:27 EDT 2002

Try Ed Hare at the ARRL (you are a member??).

The ARRL recently ran an RFI training session conducted by our local RFI
guru, K3RFI.  Mike Martin, K3RFI, works for the local power company but also
consults for other utilities on the side using his own equipment.

73 de bob w3otc

----- Original Message -----
From: "John Geiger" <johngeig at yahoo.com>
To: <dx at mailman.qth.net>; <dx-list at yahoogroups.com>;
<yaesu at mailman.qth.net>; <FT100 at yahoogroups.com>; <FT-100 at yahoogroups.com>
Cc: <vhf at w6yx.stanford.edu>; <vhfcontesting at contesting.com>;
<wsvhf at mailman.qth.net>
Sent: Wednesday, September 18, 2002 9:17 AM
Subject: RFI/Power line noise problem

> Turning to the reflectors for some help in this
> problem.  I seem to have a decent amount of static
> (s5-6) at times on HF (especially 30 meters and below)
> and on 6 meters.  I even bought a FT100D to use on the
> reputation of its noise blanker,and the NB does work
> on it at times.  Other times it even overcomes the NB.
>  I called the local power company who came out to
> check for power line noise-using some equipment that
> received in the VHF range.  They found nothing from
> power lines, but did locate 1 house several blocks
> away that was throwing out some static-it isn't this
> house that is affecting me as we tried some tests
> yesterday turning off their power, etc.
> The power companies conclusion is "Sorry, it is not
> our lines, we can do nothing more, good luck."  So
> what do I do now?  This noise is frustrating at best,
> and really interfering with my receiving at worst.  I
> am not ready to conclude that it is not power line
> noise, as it seems to me that most people with line
> noise problems, get them in the lower HF range, not in
> the VHF range like the power companies equipment
> tested.
> I have tried to locate the offending source in my own
> house, and nothing here seems to be causing it.  Cant
> seem to null it out using my miniquad-it seems to be
> coming from all directions and it is worse still on my
> G5RV dipole.
> I do have some noise on 2 meters, not as bad, that is
> coming from the NE-I can null this with my 13B2.  I
> also can't figure out what this is, or if the two are
> related.
> Anyone else been through something like this, and any
> help or ideas?
> 73s John NE0P

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